The Prayer Cross can be any cross shape; the main feature is the set of prayer words or Bible text inscribed or printed on the cross.
The Prayer Cross or Serenity Cross can be any cross shape; the main feature is the set of prayer words or biblical verses inscribed or printed on the cross. (See also Crosses with lettering.)
Often the text is so small that it's difficult to read; especially when the cross is a hand-held cross. For some people, having a Prayer Cross is like having a lucky charm. Prayer Crosses are found in church gift-shops as well as secular shops that also sell lucky seven and angel pendants.
To have some sanctifying words on a cross gives it more 'energy'. It doesn't matter if the text is illegible and it doesn't matter what the words say. It's sufficient that words are there.
However, there is no doubt that for many people, reading such a cross gives an immense source of inner comfort and hope. There's something about a cross with lettering that makes you want to read what is printed. Therefore the words are usually simple yet lead to a profound meaning. It is a cross; a cross adorned with a bonus feature.
There are countless different prayer words used and here are a few of the more popular ones:
See also Paternoster Cross, Peephole Cross and Pagan origins of prayer